You're saying this isn't for beginners and you set a price of 24$ for it? I bet a lot of advanced backbone devs will also not buy it because of the price. Whi

You're saying this isn't for beginners and you set a price of 24$ for it? I bet a lot of advanced backbone devs will also not buy it because of the price. While the content may be of good to high quality, the pricing is a bit off.